Oxygen concentrating apparatus



FIG. 1 is a front perspective view of an oxygen concentrating apparatus showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines depict portions of the oxygen concentrating apparatus that form no part of the claim. 

CLAIM The ornamental design for an oxygen concentrating apparatus, as shown and described. 